it's a box that "cuts off" the ring and tip wires of your beige box if someone picks up an extention.. perhaps saving one from fumbling around for the mute button?

i was thinking it might be based off of one of those "in use" lights, if i really get ambitious this weekend i may try to rig something up. i'd have to start off with some testing to see what happens to the lines when an extention is taken off hook, and take it from there. any ideas/hits/suggestions?